Oil-stove



J. SHANNON.

0H. STOVE.

APPLICATION FILED AUG-ll, 1921.

1,393,706. Patented Oct. 11, 1921.

m VEN TOR JAMES SHANNON, OF CANONBUEY, LONDON, ENGLAND.

OIL-STOVE.

Specification of Letters Patent.

Patented Oct. 11, 1921.

Applicationfiled August 11, 1921. Serial No. 491,558.

To all whom it may concern:

Be it known that I, JAMES SHANNON, a subject oi the King of Great Britain and Ireland, residing at 37 Marquess road, Canonbury, London, England, have invented certain new and useful Improvements in Oil-Stoves, (for which I have filed an application in Great Britain, dated July 7, 1920, under N0. 19,255/20,) of which the following is a specification.

This invention relates to portable oil stoves of the type in Which the oil is vaporized under pressure and is used in a Bunsen or atmospheric type of burner, and it has for its objects to obtain increased thermal efficiency, to facilitate assembly, to provide for the ready dismantlement of the parts for cleaning and replacement and generally to improve this type of stove.

This end is attained by a construction which embodies the following essential features:-The oil from the reservoir flows through a pipe which passes through both the burner head and a mixing chamber located under said burner head, as is common in some constructions of stoves of this type, and terminates above the top of the burner head so as to act as a vaporizer. On the top of this pipe is mounted a heat collector which is of a star or like shape, 71. c. with external radial fins and which in some cases may be made hollow. The burner head is made of considerable depth so as to insure a good fit around the fuel pipe. Leading out of the fuel pipe above the burner head or out of the heat collector is a tube which conveys the vapor to an adjustable injector fuel nozzle which coacts with a horizontally disposed induction tube which projects from and is in communication with the mixing chamber beneath the burner head. The burner head is preferably of that type which comprises a roll of two superposed strips oi sheet metal one plain and the other corrugated coiled together which while giving the burner head the necessary depth insures from the nature of its constructionan intimate contact between it and the oil pipe passing through it.

In the accompanying drawing which illustrates this invention Figure 1 is a sectional elevation through a stove, and

Fig. 2 is a plan with the usual utensil supporting means removed.

In the drawing, 1 is the oil container vessel furnished with the usual orifice for the the other before being rolled up, one of said sheets being plain and the other corrugated as shown in Fig. 2. The mixing chamber and the burner head 3 are mounted on the oil feed pipe 4 and to enable said mixing chamber and burner head to be readily mounted and dismounted said combined element is passed on to said oil feed pipe from its lower end and is clamped thereon between a fixed collar 4 and screwed collar or nut 4 The lower end of the pipe 4 is screwed into a socket 5 on the vessel 1, a washer 6 of any suitable material being preferably provided for maintaining a tight joint. Centrally disposed in the vessel 1, and forming a continuation of the pipe 4 is a pipe 7 which projects downward to within a short distance of the bottom of the vessel and it may, if desired, be furnished with a plurality of small holes as shown in Fig. 1. The upper end of the pipe 4 which forms the vaporizer terminates, at a suitable dis tance from the burner head, in a heat collector 8 which is of a star or like shape. To the upper part of theoil feed pipe 4 adjacent to the underside of the heat collector, is fixed a pipe 9 which carries the vapor to the inj ector 10 the nozzle of which is provided with a regulating valve 11 of the needle type which may also be adapted to operate as a nozzle cleaner; Immediately .lopposite tto the injector 10 and co-axially arranged therewith is a horizontally arranged induc-- tion tube 12 which is connected to and opens into the mixing chamber 2. v

For the purpose of'eiiecting the preliminary heating of the burner head a trough 13 for holding the heating up fuel is formed on or fixed to the exterior of the burner head and is of such a size that the flame from it will impinge on the radial finsof the heat collector S. The trough 13 may be provided with an incombustible wick 14. F or the 'purpose of heating the vapor injector a simistud formed on or carried by the fuelnozzle and said stud and therefore the fuel nozzle is supported by a bracket 17 fixedto the induction tube'12.

By means of the needle valve 11 the Supply of, vaporized fuel and consequently the size of the flame at the burner may be controlled as desired without altering the pressure within the vessel 1. V

For the purpose of causing a more even flow of oil into' the pipe 4 from the vessel 1 and for breaking up any air bubbles that may exist in the oil, the pipe may be provided with a surger 18 comprising eithera coil of wire as shown or a length of wire coiled with asbestos twine.

The heat collector 8 may with advantage be made hollow and placed in communication with the oil pipe 4: in which construction the pipe 9 preferably leads out of said heat collector.

The pipe 9 may with advantage be secured to the heat collector 8 in any convenient position such as that shown by the dot and dash lines in Fig. 1 in which case said heat collector is provided with a passage leading to the junction of the pipe 4 with said element, or said element may be made hollow. Y

For the purpose of cleaning the heat collector it is provided with'a hole closed by a removable screw plug 19 or the like, or alternatively said heat collector may be formed in two parts as indicated in Fig. 1 by the line at, the upper or removable part being secured in position on the lower or fixed part by any suitable means.

By the use of a heat collector of a star or like shape not only is the initial heating up accelerated and the efficiency of the vaporizer increased but the flame is broken up and spread whereby its heating property is intensified and all tendency to throw the flame back on the burner head is avoided.

What I claim is 1. Inan oil vapor stove the combination of an oil reservoir, a mixingchamber superposed on said reservoir, a burner head superposed on said mixingchamber, means for creating pressure in said reservoir, an oil feed pipe leading out or" said reservoir which passes through said mixing chamber and said burner head and terminates above said burner head was to operateas a vaporizer, a star shaped heat collector on the upper end of said oil feed pipe, an induction tube 7 leading into said mixing chamber, a vapor pipe leading from said oil feed pipe at a point above the burner head, and an injector nozzle connected to said vapor pipe and coacting with said induction tube.

2. In an oil vapor stove the combinationof an oil reservoir, a mixing chamber superposed on said reservo r, a burner head superposed on sald mixing chamber, means for creating pressure in said reservoir, an oil feed pipe leading out of said reservoir which passes through said mixing chamber and said burner head and terminates above said burner head so as to operate as a vaporizer, a star shaped heat collector on the upper end of said oil feed pipe, an induction tube leading into said mixing chamber, a vapor pipe leading from said oil feed pipe at a point above the burner head, an injector nozzle connected to said vapor pipe and coacting with said induction tube, and a preliminary heating trough exterior to the burner head and of such a size in relation to the heat collector that the flame from it impinges on the radial projections of said heat collector. V

3. In an oil vapor stove the combination of an oil reservoir, a mixing chamber superposed on said reservoir, a burner head superposed on said mixing chamber, means for creating pressure in said reservoir, an oil feed pipe leading out of said reservoir which passes through said mixing chamber and said burner head and terminates above said .burner head so as to operate as a vaporizer,

a star shaped heat collector on the upper end of said oil feed pipe an induction tube leading into said mixing chamber, a vapor pipe leading from said oil feed pipe at a point above the burner head, an injector nozzle connected to said vapor pipe and co-acting with said induction tube, an adjustable needle valve for said injector nozzle, a preliminary heating trough exterior to the burner head and of such a size in relation to the heat collector that the flame from it impinges on the radial projections of said heat collector, anda preliminary heat collector for the vapor injector nozzle.

'4. In an oil vapor stove the combination of an oil reservoir, a mixing chamber superposed on said reservoir, a burner head superposed on said mixing chamber said mixing chamber and said burner head being detachably mounted on said reservoir, means for creating pressure in said reservoir, an oil feed pipe leading out of said reservoir which passes through said mixing chamber and said burner head and terminates above said burner head so as to operate as a vaporizer, a star shaped heat collector on the upper end of said oil feed pipe, a horizontally disposed induction tube leading into said mixing chamber, avapor pipe leading from said oil feed pipe at a point above the burner head, an injector nozzle connected to said vapor pipe and co-acting with said induction tube, an adjustable needle valve for said injector nozzle and a preliminary heating trough mounted on the burner head. V

5. An oil vapor stove comprising an oil reservoir, means for creating pressure in said reservoir, a detachable mixing chamber superposed on said reservoir, a burner head superposed on said mixing chamber, an oil feed pipe leading out of said reservoir and passing centrally through'said mixing chamber and said burner head and terminating above said burner head, a hollow star-shaped heat collector carried by and in communication with the oil feed pipe, a horizontally disposed induction pipe leading into the mixing chamber, a vapor injector nozzle coacting with said induction pipe, a vapor pipe running from the hollow heat collector to the vapor injector nozzle, and a preliminary heating trough carried by and surrounding the burner head.

6. An oil vapor stove comprising an oil reservoir, means for creating pressure in said reservoir, a detachable mixing chamber superposed on said reservoir, a burner head superposed on said mixing chamber, an oil feed pipe leading out of said reservoir and passing centrally through said mixing chamber and said burner head and terminating above said burner head, a surger in said oil feed pipe, a hollow star-shaped healt collector carried by and in communication with the oil feed pipe, a horizontally disposed induction pipe leading into the mixing chamber, a vapor injector nozzle co-acting with said induction pipe, an adjustable needle valve in said nozzle, a vapor pipe running from the hollow heat collector to the vapor injector nozzle, and a preliminary heating trough carried by and surrounding the burner head.

7. An oil vapor stove comprising an oil reservoir, means for creating pressure in said reservoir, a detachable mixing chamber superposed on said reservoir, a burner head superposed on and carried by said mixing chamber said burner head being formed of a roll of two strips of metal one plain and the other corrugated, an oil feed pipe leading out of said reservoir and passing centrally through said mixing chamber and said burner head and terminating above said burner head, a hollow star-shaped heat collector carried by and in communication with the oil feed pipe, a horizontally, disposed induction pipe leading into the mixing chamber, a vapor injector nozzle co-acting with said induction pipe, an adjustable needle valve in said nozzle, a vapor pipe running from the hollow heat collector to the vapor injector nozzle, and a preliminary heating trough carried by and surrounding the burner head.

8. An oil vapor stove comprising an oil reservoir, means for creating pressure in said reservoir, a detachable mixing chamber superposed on said reservoir, a burner head superposed on and carried by said mixing chamber said burner head being formed of a roll of two strips of metal one plain and the other corrugated, an oil feed pipe leading outof said reservoir and passing with said induction pipe, an adjustable needle valve in said nozzle, a vapor pipe running from the hollow heat collector to the vapor injector nozzle, a preliminary heating trough surrounding the burner head, and a preliminary heating trough located under the vapor injector nozzle.

9. An oil vapor stove comprising a reservoir, means for creating pressure in said reservoir, a mixing chamber superposed on said reservoir, a burner head superposed on said mixing chamber, an oil feed pipe leading out of said reservoir and passing centrally through said mixing chamber and said burner head and terminating above said burner head, a divisible hollow starshaped heat collector carried by and in communication with the oil feed pipe, a horizontally disposed induction pipe leading into the mixing chamber, avapor injector nozzle co-acting with said induction pipe, a vapor pipe running from the hollow heat collector to the vapor injector nozzle, and a preliminary heating trough surrounding the urner head.

10. An oil vapor stove comprising a reservoir, means for creating pressure in said reservoir, a mixing chamber superposedv on said reservoir, a burner head superposed on said mixing chamber, an oil feed pipe leading out of said reservoir and passing centrally through said mixing chamber and said burner head and terminating above said burner head, a surger in said oil feed pipe, a divisible hollow star-shaped heat collector carried by and in communication with the oil feed pipe, a horizontally disposed induction pipe leading into the mixing chamber, a vapor injector nozzle coactin with said induction pipe, an adjustable needle valve in said nozzle a vapor pipe running from the hollow heat collector to the vapor injector nozzle, and a preliminary heating trough surrounding the burner head.

11. An oil vapor stove comprising an oil reservoir under pressure, a detachable mixing chamber mounted on said reservoir, a burner head mounted on said mixing chamber and formed of considerable depth, an oil feed pipe leading out of said reservoir and passing through said mixing chamber and said burner head, a surger in said oil feed pipe, a hollow star-shaped heat collector in communication with and carried by the oil feed pipe at a distance above the burner head, a closable orifice in said hollow heat collector, a horizontally disposed induction pipe leading into the mixing chamber, a vapor injector nozzle co-acting With said induction pipe, an adjustable needle valve in said nozzle, a vapor pipe running from the hollow heat collector to the vapor injector nozzle, a preliminary heating trough surrounding the burner head, and a preliminary heating trough located under the vapor injector nozzle.

12. In an oil vapor stove the combination With an oil. reservoir, and means for creating pressure in same of a mixing chamber mountedon the top of said reservoir, a burner head mounted above said mixing chamber said burner head being formed of a roll of two strips of metal one plain and the other corrugated, an oil feed pipe leading out of the oil reservoir passing centrally through both the mixing chamber and the burner head and terminating a short distance above said burner head, a

with the oil feedpipeand the other end of which is closed by a removable plug, a horizontally disposed induction pipe leading into the mixin chamber, a vaporinjector nozzle co-acting with said induction pipe, an adjustable needle valve in said nozzle, a vapor pipe running from the passage through the heat collector to the vapor injector nozzle, a preliminary heating trough carried by and surrounding the burner head, and a preliminary heating trough located. under the vapor injector nozzle.

JAMES SHANNON. 

